1) Make sure you have the latest version of Forge
2) If you installed a new version remove the old profile and create a new one.
3) Make sure you have Java 1.7 installed because Java 1.8 made modding "impossible"
4) Remove any mods that in compatible or crash your minecraft.

xSpectre
I also have your problem!
This is my help thread, no one replied though

edit: I think I broke PMC

No you don't have @OP's issue. Downgrade your Java to Java 7.
http://www.oracle.com/technetwork/java/ ... 80261.html <- Java 7. Pick either u71 or u72, does not matter which.
Also, what's with my reply being odd? Is it only me?

[quote="gunny203"]

Heres what happend to me when i launch it

[spoiler][14:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[14:09] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[14:09] [main/INFO] [FML]: Forge Mod Loader version 7.10.85.1230 for Minecraft 1.7.10 loading
[14:09] [main/INFO] [FML]: Java is Java HotSpot(TM) Client VM, version 1.8.0_25, running on Windows 7:x86:6.1, installed at C:\Program Files (x86)\Java\jre1.8.0_25
[14:09] [main/INFO] [FML]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.7.4_HD_U_D1.jar
[14:09] [main/ERROR] [FML]: The coremod TMIForgeLoader is requesting minecraft version 1.7.2 and minecraft is 1.7.10. It will be ignored.
[14:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[14:09] [main/INFO] [LaunchWrapper]: Loading tweak class name optifine.OptiFineForgeTweaker
[14:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class optifine.OptiFineForgeTweaker
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg]: OptiFineForgeTweaker: acceptOptions
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg]: OptiFineForgeTweaker: injectIntoClassLoader
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg]: OptiFine ClassTransformer
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg]: OptiFine URL: file:/C:/Users/Wayne/AppData/Roaming/.minecraft/mods/OptiFine_1.7.4_HD_U_D1.jar
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg]: OptiFine ZIP file: java.util.zip.ZipFile@100955a
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[14:09] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
[14:09] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLDeobfTweaker
[14:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.TerminalTweaker
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.TerminalTweaker
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg]: OptiFineForgeTweaker: getLaunchArguments
[14:09] [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main}
[14:09] [main/ERROR] [LaunchWrapper]: Unable to launch
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_25]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft$16
at net.minecraft.client.main.Main.main(SourceFile:72) ~[Main.class:?]
... 6 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.Minecraft$16
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.11.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
at net.minecraft.client.main.Main.main(SourceFile:72) ~[Main.class:?]
... 6 more
Caused by: java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_25]
at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.8.0_25]
at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.8.0_25]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) ~[launchwrapper-1.11.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
at net.minecraft.client.main.Main.main(SourceFile:72) ~[Main.class:?]
... 6 more[/quote][/spoiler]

Reinstall your forge (with the latest 1.7.10). That is a very odd error to occur.

has @op made sure they have the correct version of java

gunny203Show the error log....There isn't one. I load up Minecraft like normal, and when the launcher disappears, the game never pops up!

Edit profile -> Check launcher visibility and set it to 'Keep the launcher open'.[/quote]


Heres what happend to me when i launch it

[14:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[14:09] [main/INFO] [LaunchWrapper]: Using primary tweak class name cpw.mods.fml.common.launcher.FMLTweaker
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLTweaker
[14:09] [main/INFO] [FML]: Forge Mod Loader version 7.10.85.1230 for Minecraft 1.7.10 loading
[14:09] [main/INFO] [FML]: Java is Java HotSpot(TM) Client VM, version 1.8.0_25, running on Windows 7:x86:6.1, installed at C:\Program Files (x86)\Java\jre1.8.0_25
[14:09] [main/INFO] [FML]: Loading tweaker optifine.OptiFineForgeTweaker from OptiFine_1.7.4_HD_U_D1.jar
[14:09] [main/ERROR] [FML]: The coremod TMIForgeLoader is requesting minecraft version 1.7.2 and minecraft is 1.7.10. It will be ignored.
[14:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[14:09] [main/INFO] [LaunchWrapper]: Loading tweak class name optifine.OptiFineForgeTweaker
[14:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.FMLDeobfTweaker
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLInjectionAndSortingTweaker
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class optifine.OptiFineForgeTweaker
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg]: OptiFineForgeTweaker: acceptOptions
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg]: OptiFineForgeTweaker: injectIntoClassLoader
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg]: OptiFine ClassTransformer
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg]: OptiFine URL: file:/C:/Users/Wayne/AppData/Roaming/.minecraft/mods/OptiFine_1.7.4_HD_U_D1.jar
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineClassTransformer:dbg]: OptiFine ZIP file: java.util.zip.ZipFile@100955a
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[14:09] [main/INFO] [FML]: Found valid fingerprint for Minecraft Forge. Certificate fingerprint e3c3d50c7c986df74c645c0ac54639741c90a557
[14:09] [main/INFO] [FML]: Found valid fingerprint for Minecraft. Certificate fingerprint cd99959656f753dc28d863b46769f7f8fbaefcfc
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.relauncher.CoreModManager$FMLPluginWrapper
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.FMLDeobfTweaker
[14:09] [main/INFO] [LaunchWrapper]: Loading tweak class name cpw.mods.fml.common.launcher.TerminalTweaker
[14:09] [main/INFO] [LaunchWrapper]: Calling tweak class cpw.mods.fml.common.launcher.TerminalTweaker
[14:09] [main/INFO] [STDOUT]: [optifine.OptiFineForgeTweaker:dbg]: OptiFineForgeTweaker: getLaunchArguments
[14:09] [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main}
[14:09] [main/ERROR] [LaunchWrapper]: Unable to launch
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_25]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_25]
at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_25]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft$16
at net.minecraft.client.main.Main.main(SourceFile:72) ~[Main.class:?]
... 6 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.Minecraft$16
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191) ~[launchwrapper-1.11.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
at net.minecraft.client.main.Main.main(SourceFile:72) ~[Main.class:?]
... 6 more
Caused by: java.lang.IncompatibleClassChangeError: Implementing class
at java.lang.ClassLoader.defineClass1(Native Method) ~[?:1.8.0_25]
at java.lang.ClassLoader.defineClass(Unknown Source) ~[?:1.8.0_25]
at java.security.SecureClassLoader.defineClass(Unknown Source) ~[?:1.8.0_25]
at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182) ~[launchwrapper-1.11.jar:?]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_25]
at net.minecraft.client.main.Main.main(SourceFile:72) ~[Main.class:?]
... 6 more[/quote]


I also have your problem!
This is my help thread, no one replied though

edit: I think I broke PMC

Show the error log....

-snip-

Two possible problems

1) If you have any mods attached then they might be clashing or incompatible with the version

2) If you have installed a NEW Version of forge make sure when you create a New Profile you select the current version you've installed, you can only have one on at once.

So Im not The only one this happens to huh